Heredoc and nowdoc syntax in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a heredoc string with the identifier TEXT.

PHP

<?php
$heredoc = <<<[1]
This is a heredoc string.
TEXT;
?>

Drag options to blanks, or click blank then click option'

Atext

B'TEXT'

CTEXT

D"TEXT"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around the identifier in heredoc start.

Using lowercase letters that don't match the closing label.

Heredoc syntax starts with <<<IDENTIFIER where IDENTIFIER is an unquoted label like TEXT.

2fill in blank

medium

Complete the code to start a nowdoc string with the identifier DATA.

PHP

<?php
$nowdoc = <<<'[1]'
This is a nowdoc string.
DATA;
?>

Drag options to blanks, or click blank then click option'

ADATA

Bdata

C"DATA"

D'DATA'

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes instead of single quotes for nowdoc.

Not matching the closing label with the starting identifier.

Nowdoc syntax uses single quotes around the identifier after <<<, like <<<'DATA'.

3fill in blank

hard

Fix the error in the heredoc closing label to properly end the string.

PHP

<?php
$text = <<<EOT
Hello, world!
[1];
?>

Drag options to blanks, or click blank then click option'

AEOT

B'EOT'

C"EOT"

DEot

Attempts:

3 left

💡 Hint

Common Mistakes

Indenting the closing label.

Using quotes around the closing label.

Changing the case of the closing label.

The closing label must exactly match the starting identifier and be at the start of the line with no indentation.

4fill in blank

hard

Fill both blanks to create a heredoc string that includes a variable $name.

PHP

<?php
$name = "Alice";
$message = <<<[1]
Hello, [2]!
[1];
?>

Drag options to blanks, or click blank then click option'

AGREETING

B$name

Cname

D'name'

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around the heredoc identifier.

Not using the $ sign before the variable inside heredoc.

The heredoc identifier can be any label like GREETING. Variables inside heredoc are parsed, so use $name.

5fill in blank

hard

Fill all three blanks to create a nowdoc string that includes the literal text $name without parsing.

PHP

<?php
$name = "Bob";
$text = <<<'[1]'
Hello, [2]!
[3];
?>

Drag options to blanks, or click blank then click option'

ADATA

B$name

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes around the nowdoc identifier.

Trying to parse variables inside nowdoc.

Nowdoc uses single quotes around the identifier DATA. Inside nowdoc, variables like $name are not parsed and appear as literal text. The closing label must match the identifier exactly.